– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Fri 10 Jul Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Fri 10 Jul Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Fri 10 Jul Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryLight rain (total 3mm), mostly falling on Sat night. Warm (max 20°C on Fri afternoon, min 11°C on Sat night). Wind will be generally light. | Days 5–7 Weather SummaryLight rain (total 4mm), mostly falling on Thu morning. Warm (max 24°C on Tue afternoon, min 14°C on Mon night). Wind will be generally light. | ||||||||||||||||
Fri 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | | | |  |  |  | | | | | |  | | | |
rain shwrs | rain shwrs | rain shwrs | rain shwrs | rain shwrs | rain shwrs | cloudy | clear | clear | clear | clear | clear | clear | clear | some clouds | some clouds | rain shwrs | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.6 | 0.5 | 0.2 | 0.2 | 1 | 0.5 | — | — | — | — | — | — | — | — | — | — | 0.7 |
max °C | 20 | 18 | 15 | 17 | 17 | 14 | 18 | 16 | 19 | 22 | 19 | 21 | 24 | 20 | 21 | 24 | 21 |
min °C | 19 | 12 | 12 | 17 | 11 | 11 | 18 | 12 | 15 | 22 | 14 | 18 | 24 | 16 | 18 | 24 | 15 |
chill °C | 19 | 12 | 11 | 17 | 10 | 11 | 18 | 12 | 15 | 22 | 14 | 18 | 24 | 16 | 18 | 24 | 15 |
Freezing level m | 3350 | 3050 | 2950 | 3100 | 2600 | 2600 | 3150 | 3400 | 3600 | 3750 | 3800 | 3800 | 3850 | 3850 | 3850 | 3950 | 3900 |
Cloud base (m) | 2050 | 1750 | 700 | 1950 | 900 | 700 | 6850 | 5250 | |||||||||
 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:18 | — | — | 5:20 | — | — |
 | — | 9:09 | — | — | 9:08 | — | — | 9:07 | — | — | 9:07 | — | — | 9:07 | — | — | 9:06 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 3mm), mostly falling on Sat night. Warm (max 20°C on Fri afternoon, min 11°C on Sat night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Light rain (total 4mm), mostly falling on Thu morning. Warm (max 24°C on Tue afternoon, min 14°C on Mon night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport | |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.